Abstract : This report contains the results of a survey conducted in 1977 and 1978 on how the U.S. Aerospace Industry manages its software development projects. The sample of the U.S. Aerospace Industry that was surveyed consisted of companies with membership in the AIAA Technical Committee on Computer Systems. The survey contained a number of different parts. This volume pertains to Part Three and reports on how project managers perceive the major issues and/or major problems of software engineering project management. Other volumes pertain to Part One and Part Two. Twenty major problems were postulated and those surveyed were asked to comment on whether or not they felt the problems cited were critical, important, not important, or no problem at all. In addition the respondents were asked whether or not the problem was management, technical, both, or neither; and whether or not the problem could be solved through improvements in management, technology, both, or neither. Lastly, the surveyees were asked to describe how they would (or did) solve the problem.